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[linpy.git] / doc / geometry.rst~
1 Geometry Module
2 ===============
3
4 The geometry module is used to obtain information about the points and vertices of a ployhedra.
5
6 .. py:class:: Points
7
8 This class represents points in space.
9
10 .. py:method:: isorigin(self)
11
12 Return ``True`` if a point is the origin.
13
14 .. py:method:: __eq__(self, other)
15
16 Compares two Points for equality.
17
18 .. py:method:: __add__(self, other)
19
20 Adds a Point to a Vector and returns the result as a Point.
21
22 .. py:method:: __sub__(self, other)
23
24 Returns the difference between two Points as a Vector.
25
26 .. py:method:: aspolyhedon(self)
27
28 Returns a Point as a polyhedron.
29
30
31 .. py:class:: Vector
32
33 This class represents displacements in space.
34
35 .. py:method:: __eq__(self, other)
36
37 Compares two Vectors for equality.
38
39 .. py:method:: __add__(self, other)
40
41 Adds either a Point or Vector to a Vector. The resulting sum is returned as the same structure *other* is.
42
43 .. py:method:: __sub__(self, other)
44
45 Subtract a Point or Vector from a Vector. The resulting difference is returned in the same form as *other*.
46
47 .. py:method:: __mul__(self, other)
48
49 Multiples a Vector by a scalar value and returns the result as a Vector.
50
51 .. py:method:: __neg__(self)
52
53 Negates a Vector.
54
55 .. py:method:: norm(self)
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57 Normalizes a Vector.
58
59
60 .. py:method:: isnull(self)
61
62 Tests whether a Vector is null.
63
64 .. py:method:: angle(self, other)
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66 Retrieve the angle required to rotate the vector into the vector passed in argument. The result is an angle in radians, ranging between -pi and
67 pi.
68
69 .. py:method:: cross(self, other)
70
71 Calculate the cross product of two Vector3D structures.
72
73 .. py:method:: dot(self, other)
74
75 Calculate the dot product of two vectors.
76
77 .. py:method:: __trudiv__(self, other)
78
79 Divide the vector by the specified scalar and returns the result as a vector.
80